Automated Solid-Phase Synthesis and Structural Investigation of -Peptidosulfonamides and -Peptidosulfonamide/-Peptide Hybrids: -Peptidosulfonamide and -Peptide Foldamers are Two of a Different Kind
作者:Remco de Jong、Dirk T. S. Rijkers、Rob M. J. Liskamp
DOI:10.1002/hlca.200290008
日期:2002.12
well as the peptidosulfonamide/β-peptide hybrid 15 with nine β-residues, including an N-terminal β-peptidosulfonamide residue, were synthesized by automated solid-phase synthesis. Both CD and NMR spectroscopic measurements did not indicate any helical secondary structure for 9 and 10. As was shown by CD-measurements, the β-peptidosulfonamide residue in the hybrids 13, 15, and 16 acts as a ‘helix breaker'
Fmoc-保护的β -aminoethane磺酰氯可用于高效的自动化固相合成β -peptidosulfonamides和β -peptidosulfonamide / β -肽杂合体含有一种或多种β -peptidosulfonamide残基。因此,由Fmoc保护的β-氨基乙烷磺酰氯5a - c导致了六-β-肽磺酰胺9和九-β-肽磺酰胺10。此外,β -peptidosulfonamide / β -肽杂合体13和16分别由六个和九个β-残基组成,并且在中间包含一个β-肽磺酰胺单元,以及具有9个β-残基(包括一个N端β-肽磺酰胺残基)的肽磺酰胺/ β肽杂种15。通过自动固相合成法合成。CD和NMR光谱测量均未显示9和10的任何螺旋二级结构。如CD测量所示,杂种13、15和16中的β-肽磺酰胺残基充当“螺旋破坏者”,尤其是当它位于混合链(13和16)的中间时,但尽管程度较小,但也在N端。